Automatic hammer



April 22 ,'1924. 1,491,285

w. BLAKE ET Ax.

AUTOMATIC HAMMER Filed April 19, v1923 Patented Apr. 22, 1924.

UNITED STATES WALTER BLAKE AND yJann/ARD BRILL, or APPLETON, wislooiasnysnm BRILL ASSIGNOR 1"9` 2.1111)r SAID BLAKE.

AUTOMATIC HAMMER.

`Application led April 19, 1923. Serial No. 633,328.

To all who/m. it may concern Be it known that we, VALTER BLAKE and EDWARD BRILL, citizens of the United States, v

tends into the rear end of the casing and residing at Appleton, in the county of Outagamie, State of Wisconsin, have invented a ne-w and useful Automatic Hammer; and we do hereby declare ,the follow ,y

mers and has for its object to provide a device of this character which is electrically driven.

A further object is to provide an auto,

matic hammer comprising a cylindrical casing in which is slidably mounted a shaft having` a head cooperating with a tool carrying member, a. coiled spring interposed between the head and a shoulder and a roller carried by spaced discs adjacent the outer peripheries of the disc., which roller, during the rotation of the disc intermittently engages a lug carried by the shaft, thereby compressing the spring and releasing the lug, thereby allowing a. hammering action on the tool carrying member.

A further' object is to provide a transversely disposed shaft, on which the discs are mounted, and to which a flexible shaft may lead to any suitable source of power.

A further object is to provide the shaft with an elongated rib, slidably mounted in a longitudinally disposed groove for preventing circumferential movement of the shaft. and maintaining the shaft lug between the disc.

With the above and other objects in view the. invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing Figure 1 is a top plan View of the hammer.

Figure 2 is a rear view of the hammer.

Figure 3 is a side elevation of the hammer, partly in section.

Referring to the drawing, the numeral 1 designates a cylindrical casing, in which casing is a reciprocating shaft 2. end of the shaft, 2 is slidably mounted in a bea-ring 3 of a member 4:, which eX- is guided in said member 4 and the.y casing by means of a longitudinally disposed key 5, which is disposed in the channel 6 of the member e. The forward end ofthe shaft 2 is provided with a. cylindrically shaped head 7, which head, during thereciprocation of the shaft 2 intermittently imparts percussive blows on the tool carrying head 8, in which a tool, such for instance as a riveting tool or chisel may be disposed. Interposed between the` cylindrical head `7 andthe inner' end of a sleeve 9, which carries the member 4t is a coiledspring 10, which `coiled spring, upon a rearward movement of the shaft 2 is compressed and when the `shaft is released, said coiled spring/forces the shaft forwardly and the head thereof interengages with the head of the tool carrying member 8. The tool carrying member is mounted in a bearing 13 formed by the annular flange 11 at the forward end of the casing 1, and is provided with a. collar 12, which during the reciprocation of the tool carrying member, moves inwardly and outwardly in the counter bore 13, and limits the inward movement of the tool carrying member by engaging the annular flange 11. Tools of various kinds are received in the longitudinally disposed recess 14 in the tool carrying head.

Secured to one side of the casing 1 is a casing 15,. and in which casing is rotatably mounted a transversely disposed drive shaft 16, which may be driven from any suitable mechanism, such for inst-ance as an electric motor through a. flexible shaft 17. Mounted on the shaft 16, and in spaced relation to each other are discs 1S, which discs having mounted therebetween a roller 19, which roller, as the discs are rotated by the shaft 16 engages theI end 2O of the lug 21, thereby forcing the shaft 2 rearwardly for the reason that the lng 21 is carried by the shaft. The rearward movement o-f the shaft 2 is guided by the flange 5, however as the discs continue to rotate in the direction of the arrow a, the roller 19 will move Out of engagement with the roller 21, after compressing the spring 10, thereby releasing the shaft 2 and allowing the shaft to be forced forwardly under the iniiuence of the spring One 10, thereby imparting intermittent percussive blows 0n the tool carrying member 8.

From the above it will be seen that an automatic hammer is provided, which may be connected to an elect-ric motor by means of a flexible shaft, or to any other suitable source of power, that the device is simple in construction, positive in its operation and the partsl reduced to a minimum.

The invention having been set forth what is claimed as new and useful is l. A power hammer comprising a. cylindrical casing, a. shaft slidably mounted within said casing, a longitudinally disposed {iange carried by the shaftand slidably mounted ina guide channel of the casing and preventing rota-tion of the shaft, a tool receiving head slidably mounted in the forward end of the casing, an enlargement carried by the forward end of the shaft, a coiled spring interposed between the enlargement of the shaft and a. shoulder within the casing, an auxiliary casing carried by one side of the casing`I a transversely disposed shaft rotatably mounted in bearings of the auX- iliary casing, spaced discs carried by the transversely disposed shaft and disposed on opposite side of the guide flange of the shaft7 the discs in the path of the roller and a flexible shaft connected to the transversely dis,- posed shaft.

2. The combination with an automatic hammer, a casing, said hammer comprising a shaft guidable. wit-hin the casing, spring mea-ns for forcing said shaft in one direction, of means for moving the shaft in the otherdirection for compressing the spring and releasing the shaft, said means comprising a vtransversely disposed shaft, spaced discs carried by said transversely dipose-d shaft, a roller carried by the discs and between the. same7 a` lug carried by the spring actuated shaft and disposed in the path of the `roller, said transversely disposed shaft being adapted to be driven from a source of power` said guidable shaft being provided with a. flange slidably mounted in a channel of the casing and preventing rotation of the guidable shaft.

In testimony whereof we havre signed our names to this specification in the presence of two subscribing Witnesses.

TALTER BLAKE. v EDWARD BRILTI. Witnesses z J. L. JOHNS, JOHN MORGAN. 

